From: Huang Shijie Date: Tue, 1 Oct 2024 06:54:51 +0000 (+0800) Subject: sched/fair: remove the DOUBLE_TICK feature X-Git-Tag: v6.13-rc1~178^2~26 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e31488c9df27aaea2cdffba688129fdeb3869650;p=thirdparty%2Flinux.git sched/fair: remove the DOUBLE_TICK feature The patch "5e963f2bd46 sched/fair: Commit to EEVDF" removed the code following the DOUBLE_TICK: - - if (!sched_feat(EEVDF) && cfs_rq->nr_running > 1) - check_preempt_tick(cfs_rq, curr); The DOUBLE_TICK feature becomes dead code now, so remove it. Signed-off-by: Huang Shijie Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: "Christoph Lameter (Ampere)" Reviewed-by: Vishal Chourasia Link: https://lore.kernel.org/r/20241001065451.10356-1-shijie@os.amperecomputing.com --- diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 225b31aaee558..c9e3b8d2a85fe 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -5680,12 +5680,6 @@ entity_tick(struct cfs_rq *cfs_rq, struct sched_entity *curr, int queued) resched_curr(rq_of(cfs_rq)); return; } - /* - * don't let the period tick interfere with the hrtick preemption - */ - if (!sched_feat(DOUBLE_TICK) && - hrtimer_active(&rq_of(cfs_rq)->hrtick_timer)) - return; #endif } diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 290874079f60d..7c22b33fb9d30 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -56,7 +56,6 @@ SCHED_FEAT(WAKEUP_PREEMPTION, true) SCHED_FEAT(HRTICK, false) SCHED_FEAT(HRTICK_DL, false) -SCHED_FEAT(DOUBLE_TICK, false) /* * Decrement CPU capacity based on time not spent running tasks